ODST is an excellent take on the Halo formula, changing up the way one feels when playing the game. It still controls like Halo 3 but you are not a walking tank. Playing as a ODST changes up your approach to combat situations as you are more fragile on foot vs. the enemy. The story, while not some epic tale, is a stand-alone experience that is one of the better Halo stories in my opinion; the audio log story was surprisingly very good. Also that smooth ass jazz OST is really fucking something else. I also think Firefight mode is one of the best horde modes created, a very good take on the at-the-time still maturing game type, popularized by Gears of War 2. Very simple but great design. Shame it has no matchmaking but if you can round up some other people it is excellent.